Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data

doi:10.3847/1538-4357/835/2/260

	Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data
	Zhang, Peng-fei 1,2; Yan, Da-hai 3,4,5; Liao, Neng-hui 1; Wang, Jian-cheng 3,4,5
刊名	ASTROPHYSICAL JOURNAL
	2017-02-01
卷号	835 期号:2 页码:5
关键词	BL Lacertae objects: individual (PKS 2155-304) galaxies: jets gamma-rays: galaxies gamma-rays: general
ISSN号	0004-637X
DOI	10.3847/1538-4357/835/2/260
英文摘要	We examine the gamma-ray quasi-periodic variability of PKS 2155-304 with the latest publicly available Fermi-LAT Pass 8 data, which covers the years from 2008 August to 2016 October. We produce the light curves in two ways: the exposure-weighted aperture photometry and the maximum likelihood optimization. The light curves are then analyzed by using Lomb-Scargle Periodogram (LSP) and Weighted Wavelet Z-transform, and the results reveal a significant quasi-periodicity with a period of 1.74. +/- 0.13 years and a significance of similar to 4.9 sigma. The constraint of multifrequencies quasi-periodic variabilities on blazar emission model is discussed.
WOS关键词	ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; BL LACERTAE OBJECTS ; TIME-SERIES ; SPACED DATA ; OSCILLATIONS ; VARIABILITY ; CURVE
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000401155400006
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23093]
专题	中国科学院紫金山天文台
通讯作者	Zhang, Peng-fei
作者单位	1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Kunming 650091, Peoples R China 3.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China 4.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng-fei,Yan, Da-hai,Liao, Neng-hui,et al. Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data[J]. ASTROPHYSICAL JOURNAL,2017,835(2):5.
APA	Zhang, Peng-fei,Yan, Da-hai,Liao, Neng-hui,&Wang, Jian-cheng.(2017).Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data.ASTROPHYSICAL JOURNAL,835(2),5.
MLA	Zhang, Peng-fei,et al."Revisiting Quasi-periodic Modulation in gamma- Ray Blazar PKS 2155-304 with Fermi Pass 8 Data".ASTROPHYSICAL JOURNAL 835.2(2017):5.